Police Called as Britney Spears Refuses to Turn Over Children  —  Britney Spears is defying court-mandated custody hours by refusing to turn over her sons to ex-husband Kevin Federline.  —  The pop star was due to turn over Sean Preston, 2, and Jayden James, 1, at 7 p.m. PST.

Breaking: Tearful Brit Hospitalized After Police Standoff!  —  UPDATES: Britney arrived at Cedars-Sinai Medical Center at approximately 12:30am PT. “She was sobbing as she was taken out of her house on a gurney,” a witness tells OK!.  When she arrived at the hospital, she had managed …

More Cops, Ambulance Now at Spears' House!  —  UPDATE: Another ambulance, more fire trucks and several additional police cars have just rolled up to Britney's house.  One person on the ground described the situation to us as “scary."  —  Holy Kramer vs. Kramer!

Cops, Lawyers and Paramedics at Britney's House  —  Update: Paramedics arrived on the scene and rolled a gurney into Spears' house.  Sources are now revealing to PageSix.com that “someone is being transferred to the hospital for a mental evaluation."  An ambulance has just pulled into the driveway.

Britney Spears' Son Released from Hospital to Kevin Federline  —  Sources tell Usmagazine.com that Britney Spears' son, Jayden James, was released from L.A's Cedars-Sinai Medical Center shortly after 4 a.m. PST Friday.  —  He was with Kevin Federline's bodyguard.  Their car was being followed by the paparazzi at 4:15 a.m.

Britney Spears on Suicide Watch  —  Britney Spears was admitted to Cedars Sinai hospital in L.A. early this morning following a dramatic evening in which cops were called to her home after she refused to hand her two sons back to her ex-husband Kevin Federline.

VIDEO: Watch Britney Spears Being Wheeled on a Stretcher  —  Around 11 p.m. Thursday, a reportedly intoxicated Britney Spears was rushed via ambulance to L.A.'s Cedars-Sinai Medical Center after she defied court-mandated visitation hours Thursday night by refusing to turn over her two sons to ex-husband Kevin Federline.

Police: Britney Being Taken for ‘An Evaluation’  —  Britney Spears is being taken for “an evaluation” after police were called to her Studio City home for a “custodial dispute” Thursday, according to police.  —  At around 8 p.m. police responded to a call “about a custodial dispute regarding …

Source: Britney Went “Completely Psycho” on Hospital Gurney  —  Britney Spears went “completely psycho” as she was rushed to L.A.'s Cedars-Sinai Thursday, a source tells Usmagazine.com.  —  “They had to strap her down like a mental patient and she was going between laughing and hysterics …

Britney Spears taken to hospital for tests  —  LOS ANGELES, California (CNN) — Pop star Britney Spears was taken to hospital for tests to see if she was under the influence of alcohol or drugs and for a psychological evaluation after police were called to her home Thursday night to mediate a custody dispute, a police spokesman said.

K-Fed's Lawyer Headed to Court  —  TMZ has learned K-Fed's lawyer, Mark Vincent Kaplan, will scurry to court this morning at 8:30 AM and ask the Commissioner to strip Brit of her visitation rights — at least for now.  We're told there may not be much of an argument and it's almost certain the Commish will see Kaplan's point.

Jayden Taken to the Hospital Too  —  Two ambulances left Britney's house bound for Cedars-Sinai — one transporting Britney, the other had two-year-old Jayden James in it!  —  A car carrying Jayden's older brother Sean arrived at K-Fed's home a short time later.  No word on what Jayden was being treated for.

Britney Is At Cedars Senai Medical Center and Has Lost “Tremendous Amount of Weight Due To Stress & Mental Anguish”

Brit's Kids Are Safe, She's Under the Influence!  —  TMZ has learned Sean Preston and Jayden James were turned back over K-Fed tonight just before 11:00 PM PT.  —  We're told that while cops were at the troubled pop star's home, they discovered Spears “under the influence of an unknown substance.”